﻿/**
 * DataDrivenTestCase.cs
 *
 * Copyright (C) 2008,  iron9light
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

using System.Reflection;
using NUnit.Core;

namespace NUnitExtension.DataDriven.AddIn
{
    public class DataDrivenTestCase : NUnitTestMethod
    {
        private readonly object[] m_Arguments;
        private readonly object[] m_Constraints;

        public DataDrivenTestCase(MethodInfo method, object[] arguments, object[] constraints)
            : base(method)
        {
            m_Arguments = arguments;
            m_Constraints = constraints;
            //if (!IsNullorEmpty(m_Arguments))
            //{
            //    NameBuilder nameBuilder = new NameBuilder(method, method.Name, arguments);
            //    this.TestName.Name = nameBuilder.TestName;
            //    this.TestName.FullName = nameBuilder.FullTestName;
            //}
            TestNameUtility.Append(this.TestName, arguments);
        }

        public object[] Arguments
        {
            get { return m_Arguments; }
        }

        public object[] Constraints
        {
            get { return m_Constraints; }
        }

        public override void RunTestMethod(TestResult testResult)
        {
            if (IsNullorEmpty(m_Constraints))
            {
                Reflect.InvokeMethod(Method, Fixture, Arguments);
            }
            else
            {
                foreach (object constraint in m_Constraints)
                {
                    object actual = null;
                    if (DataDrivenFramework.IsThrowsConstraint(constraint))
                    {
                        actual = NUnitFramework.Assert.CreateTestDelegate(this, "InvokeWithoutReturn");
                    }
                    else
                    {
                        actual = Invoke();
                    }
                    NUnitFramework.Assert.That(actual, constraint);
                }
            }

            testResult.Success();
        }

        object Invoke()
        {
            return Reflect.InvokeMethod(Method, Fixture, Arguments);
        }

        void InvokeWithoutReturn()
        {
            try
            {
                Method.Invoke(Fixture, Arguments);
            }
            catch (TargetInvocationException ex)
            {
                throw ex.InnerException;
            }
        }

        static bool IsNullorEmpty(object[] array)
        {
            if (array == null)
                return true;
            if (array.Length == 0)
                return true;

            return false;
        }
    }
}
